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Biomass nanocrystal enhanced type nylon composite material, composite master batch and preparation method

A technology of biomass nanocrystal and nylon composite material, which is applied in the field of biomass nanocrystal reinforced nylon composite masterbatch and its preparation, and the preparation field of biomass nanocrystal reinforced nylon composite material, which can solve the problem of affecting the overall performance and the concentration of nylon solution. low, affecting the uniformity of finished products, etc., to achieve the effect of improving thermal stability, excellent uniformity, and improving mechanical properties

Inactive Publication Date: 2015-04-08
XUELONG GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the patent discloses the preparation of spinning solution by solution blending method, according to the disclosed process parameters, the concentration of the nylon solution is obviously low; and there is no further treatment after the solution is blended, which will affect the uniformity of the finished product , ultimately affecting the overall performance; CN 102383213A discloses a preparation method for ultra-high molecular weight polyethylene / biomass nanocrystal composite fibers, although the patent discloses that biomass nanocrystals can be compounded into polyethylene to enhance performance, but the When biomass nanocrystals are applied to nylon materials, many problems such as process conditions and material selection must be overcome; currently, there are few reports on biomass nanocrystal-reinforced nylon composite materials, composite masterbatches and preparation processes

Method used

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  • Biomass nanocrystal enhanced type nylon composite material, composite master batch and preparation method

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preparation example Construction

[0037] A preparation method of biomass nanocrystal reinforced nylon composite material, comprising the following steps:

[0038] In the first step, 15-20 parts by weight of nylon 6 or nylon 66 are dissolved in 50-100 parts by weight of formic acid solution with a concentration of 81-88wt.% at 60-100°C; the concentration of formic acid solution is preferably 83-87wt.%. The conditions can fully dissolve the nylon material;

[0039] In the second step, 1-10 parts by weight of biomass nanocrystals are dispersed in 50-100 parts by weight of 60-100 ° C concentration of 81-88wt.% formic acid solution, ultrasonic treatment for 5-30 minutes; the concentration of formic acid solution is preferably 83-87wt.%; after ultrasonic treatment, the conditions can fully disperse biomass nanocrystals;

[0040] The third step, then mix the two solutions and stir for 10-60 minutes. Pour the above mixed solution into the aqueous solution of 120-200 parts of ethanol while stirring, and filter with s...

Embodiment 1

[0048] 20 parts of nylon 6 are dissolved in 100 parts by weight of 100 ℃ 81wt.% formic acid solution, and 5 parts of chitin nanocrystals ( figure 1 Its transmission electron microscope image) was dispersed in 50 parts of 81wt.% formic acid solution at 100°C, and ultrasonically treated for 10 minutes. The two solutions were then combined and stirred for 30 minutes. The above mixed solution solution was poured and stirred into 120 parts of ethanol aqueous solution, and suction filtered. The product obtained after suction filtration is continued to be washed in 100 DEG C of distilled water, suction filtration, repeats like this 3 times, in 120 DEG C of drying 24 hours, thereby obtains nylon 6 / chitin nanocrystal composite powder ( figure 2 Its transmission electron microscope picture). Mix 50 parts of the above nylon 6 / chitin nanocrystalline composite powder, 650 parts of nylon, and 0.5 parts of antioxidant 1010 evenly, melt and blend through a twin-screw extruder, extrude and ...

Embodiment 2

[0050] 17 parts of nylon 66 were dissolved in 76 parts by weight of 78°C 85wt.% formic acid solution, 8 parts of chitin nanocrystals were dispersed in 74 parts of 80°C 85wt.% formic acid solution, and ultrasonically treated for 18 minutes. The two solutions were then combined and stirred for 10 minutes. The above mixed solution solution was poured and stirred into 160 parts of ethanol aqueous solution, and suction filtered. Continue to wash the product obtained after suction filtration in distilled water at 80°C, and repeat this twice, and dry at 100°C for 12 hours to obtain nylon 6 / chitin nanocrystalline composite powder. Mix 40 parts of the above-mentioned nylon 6 / chitin nanocrystalline composite powder, 150 parts of nylon 66150 and 10101.0 parts of antioxidant, melt and blend through a twin-screw extruder, extrude and granulate, process parameters: melt temperature is 205 °C , the screw speed is 40 rap / min, so as to prepare the chitin nanocrystalline reinforced nylon 66 co...

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Abstract

The invention relates to the field of polymer composite materials and relates to a preparation method of a biomass nanocrystal enhanced type nylon composite material. The preparation method of the biomass nanocrystal enhanced type nylon composite material is characterized by comprising the following steps: firstly, dissolving 15-20 parts by weight of nylon into 50-100 parts by weight of methanoic acid solution at the temperature of 60-100 DEG C; secondly, dispersing 1-10 parts by weight of biomass nanocrystal into 50-100 parts by weight of methanoic acid solution at the temperature of 60-100 DEG C, and carrying out ultrasonic treatment for 5-30 minutes; thirdly, mixing the two solutions obtained in the first step and the second step to obtain a mixed solution, stirring for 10-60 minutes, adding the obtained mixed solution into 120-200 parts by weight of ethanol aqueous solution, and carrying out suction filtration; and fourthly, washing a product obtained after suction filtration is carried out in distilled water at the temperature of 60-100 DEG C, carrying out suction filtration, and drying for 3-24 hours at the temperature of 80-120 DEG C, thus the biomass nanocrystal enhanced type nylon composite material is obtained. Nano fiber and a nylon-6 matrix form a hydrogen bond and interact each other, so that interface interaction effect of the nano fiber and the nylon 6 matrix can be obviously improved, and thermal stability can also be improved.

Description

technical field [0001] The invention relates to the field of polymer composite materials, and relates to a preparation method of a biomass nanocrystal reinforced nylon composite material, a biomass nanocrystal reinforced nylon composite masterbatch and a preparation method thereof. Background technique [0002] Thermoplastic resin composites have the advantages of simple molding, short production cycle and reusability, and become an important branch of composite materials. Polyamide is commonly known as nylon, and its English name is Polyamide (PA). It is a general term for thermoplastic resins containing repeating amide groups -NHCO- on the molecular backbone. Polyamide plastic is the product with the largest output, the most variety and the most widely used among the five general engineering plastics. With the miniaturization of automobiles, the high performance of electronic and electrical equipment, and the acceleration of the lightweight process of mechanical equipment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L5/08C08L1/02C08K5/134
CPCC08L77/02C08L77/06C08L2201/08C08L2205/16
Inventor 贺频艳贺群艳竺菲菲虞宁虞雷斌史嵩雁
Owner XUELONG GRP
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